XtGrabKey
calls XGrabKey specifying the widget's window as the grab window if
the widget is realized. The remaining arguments are exactly as for XGrabKey.
If the widget is not realized, or is later unrealized, the call to XGrabKey
will be performed (again) when the widget is realized and its window
becomes mapped. In the future, if XtDispatchEvent is called with a KeyPress
event matching the specified keycode and modifiers (which may be AnyKey
or AnyModifier, respectively) for the widget's window, the Intrinsics
will call XtUngrabKeyboard with the timestamp from the KeyPress event
if either of the following conditions is true:

·

There is a modal cascade
and the widget is not in the active subset of the cascade and the keyboard
was not previously grabbed, or

·

XFilterEvent returns True.

XtUngrabKey
calls XUngrabKey specifying the widget's window as the ungrab window
if the widget is realized. The remaining arguments are exactly as for XUngrabKey.
If the widget is not realized, XtUngrabKey removes a deferred XtGrabKey
request, if any, for the specified widget, keycode, and modifiers.

If
the specified widget is realized XtGrabKeyboard calls XGrabKeyboard
specifying the widget's window as the grab window. The remaining arguments
and return value are exactly as for XGrabKeyboard. If the widget is not
realized, XtGrabKeyboard immediately returns GrabNotViewable. No future
ungrab is implied by XtGrabKeyboard.

XtUngrabKeyboard calls XUngrabKeyboard
with the specified time.

XtGrabButton calls XGrabButton specifying
the widget's window as the grab window if the widget is realized. The remaining
arguments are exactly as for XGrabButton. If the widget is not realized,
or is later unrealized, the call to XGrabButton will be performed (again)
when the widget is realized and its window becomes mapped. In the future,
if XtDispatchEvent is called with a ButtonPress event matching the
specified button and modifiers (which may be AnyButton or AnyModifier,
respectively) for the widget's window, the Intrinsics will call XtUngrabPointer
with the timestamp from the ButtonPress event if either of the following
conditions is true:

·

There is a modal cascade and the widget is not in the
active subset of the cascade and the pointer was not previously grabbed,
or

·

XFilterEvent returns True.

XtUngrabButton calls XUngrabButton
specifying the widget's window as the ungrab window if the widget is realized.
The remaining arguments are exactly as for XUngrabButton. If the widget
is not realized, XtUngrabButton removes a deferred XtGrabButton request,
if any, for the specified widget, button, and modifiers.

XtGrabPointer
calls XGrabPointer specifying the widget's window as the grab window.
The remaining arguments and return value are exactly as for XGrabPointer.
If the widget is not realized, XtGrabPointer immediately returns GrabNotViewable.
No future ungrab is implied by XtGrabPointer.